Earned Income Tax Credit Estimator (pub 596)

Tools and Utilities • United States of America Taxes

Written by STEM Calculators Team Published January 11, 2026 Updated February 24, 2026

Earned Income Tax Credit (EITC) estimator

A fast estimator using IRS phase-in/phase-out parameters for the selected tax year. Always verify with Pub 596 and your Form 1040 instructions.

Tip: If you don’t know AGI yet, you can leave it blank and the tool will assume AGI = earned income for an estimate.

Inputs

Tax year

Parameters update annually (Pub 596 / revenue procedure inflation adjustments).

Filing status

Note: separated spouse special rule is not evaluated here.

Earned income (USD)

Wages, self-employment net earnings (simplified), etc.

Adjusted gross income (AGI) (USD)

Phase-out uses the larger of AGI and earned income (per IRS definitions in the parameter guidance).

Qualifying children count

This drives the EITC curve (0 / 1 / 2 / 3+).

Children ages (optional, comma-separated)

Simple sanity check only (actual “qualifying child” rules are more detailed).

Investment income (USD)

If above the annual limit, EITC is not allowed.

Residency / special rules (optional later)

This version does not evaluate SSN validity, residency duration, foreign earned income exclusions, dependency tests, or childless EITC age rules.

Ready

Disclaimer: This is an estimator. The IRS uses detailed worksheets/tables; your actual EITC can differ based on factors not captured here.

Batch scenarios (CSV paste / upload)

Open batch mode

Paste CSV (one scenario per row)

Columns: year, status (single/hoh/qss/mfj/mfs), earned_income, agi, qc_count (0/1/2/3), investment_income.

Upload CSV file

Upload replaces the textarea content.

Batch actions

#	Year	Status	QC	Earned	AGI	Inv. income	Likely eligible?	Estimated EITC	Notes

Batch results use the same estimator logic as the single scenario.

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Earned Income Tax Credit (EITC): what this calculator estimates

The Earned Income Tax Credit (EITC) is a refundable U.S. federal tax credit for people who work and have earned income. The credit amount depends mainly on your earned income, your filing status, your adjusted gross income (AGI), and the number of qualifying children. The IRS updates EITC limits and tables each tax year, so estimates must be tied to the selected year.

Primary reference: IRS Publication 596 (Earned Income Credit).

Inputs used by the estimator

Tax year: EITC parameters (maximum credit, income thresholds, investment income limit) change each year.
Filing status: EITC eligibility and thresholds depend on status. Married filing separately is generally not eligible (there are special exceptions not evaluated by this estimator).
Earned income: This is the main “phase-in” driver of the credit (wages, some self-employment income, etc.; details vary by situation).
AGI (Adjusted Gross Income): The phase-out is based on the larger of earned income and AGI. If AGI is not provided, the calculator can use a simple estimate by assuming AGI equals earned income.
Qualifying children count: The IRS has different EITC curves for 0, 1, 2, or 3+ qualifying children.
Investment income: If investment income exceeds the annual limit for the tax year, EITC is not allowed.

Outputs you get

Likely eligible? A practical yes/no style message with reasons and common gate checks.
Estimated EITC amount based on the selected year’s credit curve.
Next steps / verify checklist to help you confirm rules that are not fully modeled.

How the EITC curve works

For each tax year and category (filing status group and qualifying-children count), the IRS defines key breakpoints: an earned-income amount where the credit reaches its maximum, an income threshold where the credit starts to phase out, and a completed phase-out amount where the credit becomes zero.

Conceptually, EITC is “piecewise”: it rises at a phase-in rate, then stays near the maximum, then falls at a phase-out rate until it reaches zero. The phase-out uses the larger of earned income and AGI.

\[ \begin{aligned} &I=\max(\text{earned income},\text{AGI})\\[6pt] &C_{\text{in}} = r_{\text{in}} \cdot (\text{earned income})\\[6pt] &C_{\text{pre}} = \min(C_{\max},\, C_{\text{in}})\\[10pt] &\text{If } I \le T:\quad C = C_{\text{pre}}\\[6pt] &\text{If } I > T:\quad C = \max\!\Bigl(0,\; C_{\text{pre}} - r_{\text{out}} \cdot (I - T)\Bigr) \end{aligned} \]

In the visualization, the plotted curve is shown as “credit vs earned income” to illustrate the shape. Your highlighted point uses your entered values, including AGI if provided.

Important eligibility rules this estimator does not fully check

Publication 596 includes eligibility requirements that can change your result even if the income-based estimate looks favorable. This tool is intentionally simplified, so you should verify at least these topics:

Qualifying child tests: relationship, age rules (including student/disability exceptions), residency with you, joint return test, and tie-breaker rules.
SSN rules: EITC generally requires valid SSNs for you (and spouse if filing jointly) and for any qualifying child claimed for EITC purposes.
Filing status nuances: Married filing separately is generally not eligible, but there are special cases (for example, certain separated spouses) that are not evaluated here.
Earned income definition details: Self-employment and special pay types can affect earned income in ways not captured by a quick estimator.
Foreign earned income exclusion and other exclusions: these can disqualify EITC in some situations.
Childless EITC rules: Age and residency requirements for taxpayers without qualifying children are more detailed than “QC count = 0.”

How to verify your final EITC amount

Read the IRS rules and examples in Publication 596.
Confirm investment income is below the tax-year limit and that your filing status is eligible.
Confirm whether each child meets the full qualifying child tests (not just an age check).
Use the IRS worksheets/tables or the IRS EITC Assistant (if available for the year) to compute the final credit.
If you have qualifying children, be prepared to complete any required supporting schedule (for example, Schedule EIC when required).

This calculator is best used as a planning and learning tool: it helps you understand where you sit on the EITC curve and which “gates” most commonly affect eligibility, but it is not a substitute for IRS instructions or professional advice.

Frequently Asked Questions

What does this Earned Income Tax Credit (EITC) estimator calculate?

It estimates the EITC amount from your tax year, filing status, earned income, AGI, qualifying children count, and investment income. It also flags common eligibility gates and shows where you fall on the EITC curve.

Why does the calculator use the larger of earned income and AGI?

The phase-out is based on an income measure that uses the larger of earned income and AGI. The estimator uses I = max(earned income, AGI) to determine whether and how quickly the credit phases out.

Can I leave AGI blank in the EITC estimator?

Yes. If AGI is blank, the tool assumes AGI equals earned income to produce an estimate, which can be useful early in planning but may differ from the final credit once AGI is known.

How does qualifying children count change the estimated EITC?

EITC has different maximum credits and phase-in and phase-out rates for 0, 1, 2, or 3+ qualifying children. Selecting the correct count changes the curve used to compute the estimate.

Does this tool fully determine EITC eligibility?

No. It focuses on income-based parameters and common gates, but it does not fully test detailed rules such as SSN validity, residency duration, dependency tests, foreign earned income exclusions, or full qualifying child tests from Publication 596.

Earned Income Tax Credit (EITC) estimator

Inputs

Batch scenarios (CSV paste / upload)

Next steps / verify checklist

Calculation steps

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Frequently Asked Questions

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